Deep-well pump.



J. HAHN.

DEEP WELL PUMP.

APPLICATION FILED SEPT. 8, 1908.

Patented May 30, 1911.

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@NITE man T. FIQE.

JOHN HAHN, OF LOS ANGELES, CALIFORNIA.

DEEP-WELL PUMP.

Application filed September 8, 1908.

, is a specification.

An object of this invention is to make provision for increased speed ofstroke and increased delivery of liquid at each stroke. This isaccomplished by providing novel means for separating from the liquidbefore it reaches the standing-valve, gas or air contained in suchliquid, so that the same will not operate to prevent rapid seating ofthe valves of the pump. By this arran ement the valves are allowed toseat sudden y, and the pump operates to discharge liquid that is morefree from bubbles of air or gas than withformer pumps. In this way muchloss of eiiiciency from back flow of .liquid through the valve-seats, orfrom occupation of space in the tubing by the air or gas, and also fromthe slowness of stroke heretofore necessary, is avoided. Any air or gaswhich reaches the working-barrel of the pump is liable to cause anemulsion of the oil under the action of the piston, and the productionof such emulsion will be reduced in the ratio in which the eliminationof the air is effected.

An object ofthe invention is to avoid pro ducing. such emulsion.

Another object is to provide a cheaper and simpler construction by whichthe liquid is prevented from flowing back around the of the standingvalve cage and the seat thereforis very slight and the tapered portionis elongate, so that when the standing valve cage is .driven into itsseat the joint will be hermetrically sealed without the use of leathercups or any other form of extension from the body of the standing valvecage and in this manner the passage for liquid inside the valve can bemade of the maximum size and all the advantages of the packingheretofore used may be secured.

Another object is greater economy in replacing worn parts.

Specification of Letters Patent.

This is effected by providing two ouplings, one connected with thepump-tubing, and vthe Other with the Patented May 30, i911.

serial No. 452,151.

anchor or suction pipe, connecting said cou-- plings by a nipple, andproviding one or more detachable liner-sections which are held in placeby and between the couplings and constitute the working-barrel of thepump. By this means, when the workingbarrel becomes worn it is onlynecessary to detach the nipple from one of the couplings then remove thelining or the worn section thereof, and replace it with new. In order tominimize the length of lining which must be replaced at any time becauseof wear, a plurality of sections may be employed, care being taken inconstructing the pump that a single section shall be made to extend onlyfor that length subject to maximum wear, while another section may bemade to extend along the portion subject to another degree of wear, andso on with each section, so that the section most subject to wear may bereplaced independently of those sections less subject to wear, thusleaving the latter sections to be further worn and afterward removed andreplaced, and so on. In this connection the invention consists in theconstruction of the sectional liners with spigot joints whereby theremoval of any section and replacing the same withl new may beaccomplished at' minimum expense of time, labor and material.

Another object is to provide a construction ywhereby the standing-valvecage is detachably lockedjin its seat.

Another object .is to improve the construction of valve-cages so-as toafford a hold for fishing-tools, and also to provide increased strengthbetween the sides of the cages and the pin or socket by which the sameis tobe connected with the pump-rod or other attachment for lifting thecage.`

The invention may be` applied in different forms, and I do not limit thesame to any specific form of construction.

The accompanying drawings illustrate the invention in a form I atpresent .deem most desirable.

Figure'l is a fragmental, vertical section/ of/a pump embodying thisinvention and located in a well-casing. Portions between the valve-cagesare broken away `to contract the view. Fig. 2, is a fragrnental,sectional detail of theostanding-valve cage and the parts near the same.Fig. 3 is a sectionon line ma, Figs. 1 and 2. Fig. 4 is a section online Fi s. 1 and 2. Fig. 5 is an elevation of the 10c ing bushing thatholds the cage the spigot joint.

extension in place. Fig. 6 is an axial sec' tion of said bushing. Fig. 7is adetailfof 6 is the usual standing-valve, and.v 7 a j standing-valvecage. The pump is provided below the standing-valve with an air or gastrap. In the drawing said trap is 1n the -form of a chamber 8 between animperforate portion 9 of the suction-pipe 10 and a conduit 11 adapted todirect liquid to the standing-valve said conduit being provided with aninlet formed by orifices 12, 13, and having an imperforate portion14'above such inlet.-

The suction-pipe 10 has an inlet formed of numerous perforations 15through which the liquid may flow tothe conduit, said suction-pipeforming a chamber outside and aroundv such conduit to intercept air orgas on its .way to the conduit; an outlet 16 being provided for air orgas from the chamber below the standing-valve. The upper part of theconduit 11 is provided with an outlet 17 to communicate with the outlet16 so that x air or gas which may find its way into the conduit 11 mayescape to the chamber and thence through the outlets.

The principle upon which the air or gas is intercepted and separatedfrom the liquid, is that the liquid must flow across the interveningspace between the suction-pipe 1() and the conduit 11, 'and during thepassage of the liquid across such space the air or gas will rise fromthe liquid, thus becoming entrapped between the imperforate portion 14of the conduit and the imperforate portion 9 of the suction-pipe, andas'the air or gas passesthrough the inlet orifices'12, the air that has'not escaped into the chamber 8 will gas may becomemore readilyseparated'frtmfl` the liquid. The conduit 11 forms a downward extensionof the valve-cage'p'7, being screwed into said valve-cage, as shown at19. The lower end of the valve-.cage is a spigot being nearlycylindrical and very slightly tapered, as shown at 20. The` novelty ofthe taper portion of the valve cage and lits seat consists in the veryelongate and slight taper, so that the same 1s in the form of a spigotjoint. The standing valve cage 7 is Aformed of a single piece having alower end provided with an elongate taper portion as stated, whichdirectly seats in the spigot joint seat 27 so that a maximum opening orbore may be provided within the valve cage to accommodate the liquid. Afurther advantage of'making the standing valve cage of a single piecewith an elongate taper portion 2O is that the valve cage is thus adaptedto be seated in a turret lathe and turned accurately and the seat forsaid tapered portion may also be turned in the same manner. This methodof seating and mounting standing valve cages is new and'is regarded as avery important step in advance over previous construct-ions as itpositively seals the joint at the bottom of the cage without packing andallows the cage to be drawn from and replaced i'nto the seat thereforwithout any destruction of packing and also without liability 'of pieces,of the packing lodging in the tubing when the standing valve iswithdrawn, and it also considerably increases the output of the wellover that of lthose supplied with pumps having such standing valve cagesas were previously constructed.

21 is a coupling connected with the `pumptubin 3 by means of a nipple 22and a coupllng 23. Said coupling is screwed on to the nipple 22 and isprovided internally with a seat 24 fora bushing 25; the upper end ofwhich is provided with an external flange 26 to rest on the shoulder 24.Said bushing is provided at lits upper end with 'a taper-seat 27 for thetaper portion 20 of the standing-valve cage, thus forming the spigotjoint between the standing-valve cage and the bushing. Said bushing tstightly in and extends downward from the coupling 21, and its inner faceis inwardly bent, as shown at the inward bend or projection 28, and isin resilient engagementwith the conduit 11 so as to hold the samefrictionally. Such'resilient engagement may be effected in variousways.v In the form illustrated in the drawings, the bushin 25 and thecon duit 11 are both made resi ient or bendable, this being done byslotting the bushing land conduity longitudinally. The. slots 29, of theconduit arenarrow,"thus forming a number ofbars 30, the outer face of`cach of 'which is"4 outwardly bent, asshown at 31, to j as toinsureescape of air and gas through the vslots durino engaggnientrbetween the bars of the conduit and those of the bushing, .regardless ofhow the conduit may be 'the couplin eeaeao turned. Means are provided tohold the bushing in the seat in the coupling, the same consists of aliner 33 which may be made of one or more sections held in place betweenl21 and 23, which are connected by the nipple 22, the same being screwedinto said couplings `todraw them tightly toward each other to cl'anp theliner against the bushing. Y The couplings, the nipple and the liner,constitute the workin -barrel of the pump, 'and said liner is held inplace by slip-joint construction, as shown at 34 and 35. When the lineris made of two sections, as shown in Fig. 1, said sections may also beunited by a spigot-joint, as shown at 36, so asto be perfectly tight.

The valve-cages are provided with means for detachable connection with apump-rod or other ap liance. For this purpose 37 is a threaded pin, and38 a threaded socket in the working and standing valve-cagesrespectively. Below such means for detachable connection .the cages areprovided with outwardly extending, overhanging shoulders shown at 39,the same being in an eX- tension 41, above the cage proper shown at 7.Said shoulders may slant inwardly and upwardly as clearly shown in Fig.2, for engagement with the fishing-tool, not shown. A web 42 is providedbetween the shoulders 39 to give strength and rigidity to the upwardextension 41. The valve-way 43 is limited atthe top by shoulders 44 andhas lateral outlets 45 leading from the valveway, and there are belowand above said outlets solid walls or rings 46 and 47, the lower walls46 forminga cylindrical bore 48 to ,receive the valve-seat, said borebeing threaded to receive the downward extension 14. rlhe solid wallabove the valve-way forms the hollow upward extension 41 terminating inthe threaded socket 38 and being provided below said socket with thelateral ports 49.

ln practice, when the standing valve-cage is lowered` into position itsextension will seat friction-tight in the bushing, and will seat in thetaper-seat and will be held therein by frictional engagement of theextension with the bushing. rlhe piston will be operated b a pump-rod inthe usual way, and the suction thereof will cause the liquid to Howhorizontally across the space between the suction-pipe 10 and theextension. The liquid thus Hows-horizontally, and the air or gas willrise therefrom and accumulate around the inside wall of the suction-pipe9 and will ascend to the outlet 16. Any air that may reach the interiorof the extension may flow up along the walls of such extension and mayow out through the slits or slots 29 in the extension and through slots40 inthe bushing, and thence out'through the outlet 16; or if the airreaches so high as the outlet 17 the same may flow out from -thence andthrough the slots 40, and thence through the outlet 16.

In my copending application for patent Serial No. 480,787, filed March1, 1909, I have shown the combination with the pump tubing of a workingbarrel composedof sections that are united inside the pumptubing byslightly tapered nearly straight elongate spigot joints in4 which theengaging surfaces are of considerable length and nearly cylindrical, sothat the sections are united inside -the pump ,tubing by friction tightelongate spigot Joints, said construction being a completion of thesuggestion of the spigot joint shown at 36 herein but not claimed hereinfor the reason that the same is more fully shown in said otherapplication and is fully claimed therein.

claim:

1. A ump provided ybelow its standingvalve with a conduit to directliquid to such valve, said conduit being provided with an inlet andhaving an imperforate portion above such inlet, means to form a chamberoutside such conduit to intercept the air or gas on its way to theconduit, an outlet being provided for air or gas from the upper part ofsaid conduit and said chamber.

2. A pump provided below its standinglvalve with a conduit to directliquid to such valve, said conduit being imperforate for a lportion ofits lengt-h and provided with an inlet below such portion, a pipe aroundsuch conduit, the same having an imperforate portion corresponding tothat of said conduit and being provided with an inlet below suchimperforate portion, pump tubing, and a coupling between the pipe andtubing, an outlet being provided through the coupling from the interiorof the pipe above said imperforate portion.

3. A pump provided below its standingvalve with a conduit leadingvertically to the standing-valve and provided with a lateral inlet, apipe forming a chamber around said conduit and provided with an inlet todirect liquid approximately horizontally toward the inlet of theconduit, an outlet being provided at the top of the chamber for thetrapped air or gas. p

4. A pump provided below its standingvalve with a conduit to direct liuid tothe standing-valve, means outside said conduit to direct liquidhorizontally tothe conduit, and means to receive air or gas which mayrise from the horizontally moving liquid, an outlet being provided forsuch gas.

5. A pump provided with a standingvalve having a downward extensionwhich is provided with an. imperforate portion and with an inlet belowthe imperforate portion, a pipe outside said downward extension, thesame "being provided with an imperfoi'ate portion corresponding withthat of the' downward extension, and with an inlet below suchimperforate portion to direct liquid toward the inlet of the downwardextension, and a coupling connected with the pump tubing and providedwith an outlet, said pipe being screwed into said coupling to deliverair or gas to said\outlet.

6. A pump provided with a standingvalve having a downward extension thathas an imperforate'portion and with an inlet below the imperforateportion and an outlet above the imperforate portion, a pipe outside saiddownward extension, the same being provided with an imperforate portionaround that lof said -downward extension, and with an inlet below suchimperforate portion to direct'liquid toward the inlet of the downwardextension, and a coupling connected with the pump tubing and providedwith an outlet, said pipe being screwed into said coupling to deliverair or gas to said eoutlet.

7 A pump provided with a standingvalve cage that has a downwardextension, a portion of which extension is imperforate, an inlet beingbelow said imperforate portion and a lateral outlet above saidimperforate portion, a bushing forming a seat for the standing-valvecage, the same frictionally engaging said downward extension, and asuction-pipe around said extens'on provided with an imperforate portiocorresponding to that of the downward extension, and also provided belowsaid imperorate portion with an inlet, and above such portion with anoutlet. V v

8. In a pump the combination with a suction-pipe of a coupling securedto the pipe and provided with an outlet leading Jfrom the interior ofthe pipe, a standing-valve cage provided with a downward extensioninside the pipe, and a bushing in the coupling, the same forming a seatfor the standing-valve cage and being in resilient enagement with theextension, and means to hold the bushing in position.

9. A pump provided with tubing having a coupling a standing-valve cageand having a downward extension, pling to seat the cage and toresiliently engage the extension. i

10. In a pump provided with tubing having a coupling a standing-valvecage provided with a resilient barred extension and a bushing in thecoupling to support the cage and engage the bars of such extension.

11. A pump having a suction pipeand a standing valve seat and provided,with a laterally perforated coupling that is` Vconnected with thesuction-pipe of the pump and carries the standing-valve s eat, theper-y` forations being between said pipe and said\ seat.

12. The combination of a suction-pipe, a coupling screwed thereto andprovided lwith a seat, a bushing seated in the seat and proconnectingthe suct1on-pipe of a bushing in the cou-y vided with a ange and ataper-seat, a standing-valve cage seated in the taper-seat, a liner oneend of which rests on the bushing, another couplingl provided with aseat in which the otherend of the liner is seated, and a nippleconnecting the couplings.

13. The combination of a suctionipe Aa coupling screwed thereto andprovide with a seat, a bushing seated in the seat and provided with aflange and a seat, a standingvalve cage seated in the latter seat, aliner one end of which rests' on the bushing, another coupling providedwith a. seat in which the other end of the liner is seated, and a nippleconnecting the couplings.

14. A valve-cage provided with a valveway having lateral outlets, wallsbelow and above said outlets and vertical passages inside said wallsbelow and above said valve-way, said valve-cage being also provided witha hollow upward extension above the upper solid wall, said extensionbeing provided with means above said ports for detachable connectionwith the pump-rod, and said upward extension being provided withoutwardly extending, overhanging shoulders below said means and abovesaid ports l 15. A laterally erforated coupling for a pumprwith theworking-barrel so 'as to allow entrapped air to escape betweensuch pipeand barrel.

16. A pump provided with a suction pipe that has an inlet formed ofnumerous perorations and has an imperforate ortion above said inlet.andis also provideV at its top with an outlet for entrapped air or gas.

17. In a pump the combination with a standing valve and tubing, of aworking barrel and the conduit set forth rovided with a perforateportion, an imper orate portion above the perforate portion and bendablebars above the perforate portion.

18. Iny a pump the combination with a standing valve and tubing of aworkingvbarrel and the condu'rt set forth provided with a perforateportion, an imper orate portion above`- the perforate portion andprojecting bars above the perforate portion.y

19. `In a pump, a standing valve cage provided .with a resilientextension and a resilient bushing to seat the cage and engage theresilient portion of the extension.

20. Ina pump the combination with the working barrel and the pumptubing, of ametallic slotted resilient conduit and means carried by thetubing held down by the working barrel and arranged outside said conduitto rictionally engage the same.

21. ln a pump a metallic slotted resilient conduit having an outwardprojection, pump ftubingoutside said resilient conduit, means betweensaid tubing and conduit to engage said outward projection tofrictionally retain the resilient conduit anda workand with solid withlateralports and ing barrel arranged to hold down said pump tubing; andan anchor connected with means. the tubing forming a chamber around the22. In a punipthe combination with the conduit and downward extension. gpump tubing and the working barrel, `of a In testimony whereof, I havehereunto set 15 5 metallic slotted resilient conduit; a downmy hand atLos Angeles, California,' this Ward extension of tle working barrel 29thdafy of August 1908. around said conduit an having an inward projection,said conduit and said downward JOHN HAHN extension being in frictionalengagement In presence of- 10 with each other, and said downward exten-JAMEsfR. TOWNSEND,

sion being frictionally connected with the M. BEULAH TOWNSEND.

